Table T7. Distribution and relative abundances of selected diatom species, Site 1150.

Leg
Hole
Core
Section
Type
Interval
Top (cm)
Bottom (cm)
Depth (mbsf)
Diatom 
zone
NPD
Geologic 
age
Preservation
 Group abundance
 Actinocyclus curvatulus
 Actinocyclus ingens
 Actinocyclus oculatus
 Actinoptychus senarius
 Aulacoseira spp.
 Cavitatus jouseanus
 Cocconeis costata
 Coscinodiscus marginatus
 Coscinodiscus radiatus
 Crucidenticula nicobarica
 Delphineis simonsenii
 Delphineis surirella
 Denticulopsis dimorpha
 Denticulopsis hyalina
 Denticulopsis katayamae
 Denticulopsis lauta
 Denticulopsis praedimorpha
 Denticulopsis simonsenii
 Fragilariopsis doliolus
 Hemidiscus cuneiformis
 Koizumia tatsunokuchiensis
 Neodenticula kamtschatica
 Neodenticula koizumii
 Neodenticula seminae
 Nitzschia fossilis
 Nitzschia marina
 Nitzschia reinholdii
 Nitzschia rolandii
 Paralia sulcata
 Proboscia barboi
 Proboscia curvirostris
 Pyxidicula zabelinae
 Rouxia californica
 Stephanopyxis horridus
 Stephanopyxis turris
 Thalassionema nitzschioides
 Thalassionema schraderi
 Thalassiosira antiqua
 Thalassiosira eccentica
 Thalassiosira gravida
 Thalassiosira jouseae
 Thalassiosira latimarginata
 Thalassiosira nidulus
 Thalassiosira oestrupii
 Thalassiothrix longissima
 Chaetoceros spp. resting spores
186
1150
A
1
H
CC
23 28 7.68 N. seminae
12
Pleistocene M A F D









r




R

r r F

r










R

C
C
C
186
1150
A
2
H
CC
22 27 17.69 N. seminae
12
Pleistocene G A R






C

R










C









A



C
C
C
F
186
1150
A
3
H
CC
40 45 27.45 N. seminae
12
Pleistocene G C F
















F



F



F




C F

F

F


C
186
1150
A
4
H
CC
23 28 36.65 N. seminae
12
Pleistocene M C





F















C










C


C
C
C
C
186
1150
A
5
H
CC
24 29 46.33 N. seminae
12
Pleistocene G C





F F F













C
R

F




R C


C
R

F F
186
1150
A
6
H
CC
39 44 55.73 N. seminae
12
Pleistocene G C

r


R
R








R

r r C
R

R










R R
C
C
186
1150
A
7
H
4
65 69 60.35 P. cuvirostris
11
Pleistocene G A







R













C
R



F


R R


F
F
F
F
186
1150
A
7
H
CC
25 30 65.30 P. cuvirostris
11
Pleistocene G A


R

R
T








R



F
R

R R F


F F



C R
C
F
186
1150
A
8
H
CC
5 10 74.45 P. cuvirostris
11
Pleistocene G C R


R
R















C
F



T


F



F




C
186
1150
A
9
H
CC
48 53 84.53 P. cuvirostris
11
Pleistocene M A


T


C









R





R R


R



F



C

R
C
186
1150
A
10
H
CC
33 38 94.09 P. cuvirostris
11
Pleistocene G A R

R

R F









F



C
F



R






R
F R

R C

Notes: NPD = North Pacific Diatom zones. Preservation: G = good; M = moderate; P = poor. Abundance: A = abundant; D = dominant; C = common; F = few; R = rare; T = trace. r = reworking. Only a portion of this table appears here. The entire table is available in ASCII format.